Utilização de métodos multivariados na avaliação sensorial de bebidas de goiaba, caju e cajá adoçadas com diferentes edulcorantes

Abstract

Some individuals need to replace the non-caloric sweetener for sucrose thus looking for products which are endowed with taste and characteristics close to those of sucrose. This is a trend that has been observed at the world level in the non-alcoholic beverage industry, based on this the proposal of ready to drink light juice industries is to develop healthier products without compromising taste. The fruits consist of nutritional source of vitamins, minerals and soluble carbohydrates, and some have higher content of a nutrient or another, highlighting three important fruit pulp to the Northeast, cashew apple, guava and caja . Considering the growing demand for beverage tasting and expansion of differentiated products segment with reduced caloric values, this study aimed to develop cashew apple, guava cajá beverages and sweetened with different sweetener, through surface response methodology, assessing sensory acceptance by internal preference mapping, test medium and frequency of notes, and to characterize their chemical and physicochemical behavior. The formulations chosen for the study were 17,5% guava pulp and 11% sugar, 20% cashew apple pulp and 10% sugar and to 25% caja and 10% sugar, the first being called as guava beverage and the other two formulations called nectars. For the chemical and physico-chemical, analysis cashew nectars sweetened with sucrose and different sweeteners showed little variation, except for soluble solids which was 11.82 °Brix for sweetened with sucrose and 0.52 ºBrix for sweetened with stevia and total sugars, which sweetened with sucrose showed higher values than the other. Cajá nectars sweetened with sucrose and different sweeteners presented significant difference in the parameters of pH, soluble solids, total sugar, L *, a *, b *, C *, h, yellow flavonoids, anthocyanins, carotenoids and polyphenols total. The sweetener, which sensory characteristics were closest to those of sucrose in the guava beverage was aspartame, for the cashew apple nectar was aspartame, followed by cyclamate/saccharin and in the caja nectar was aspartame, followed by the sucralose sweetened while with stevia had lower sensory evaluation. The use of IPM (internal preference mapping) confirmed the results obtained using the response rank frequency and average test.